To install Arboreal on Microsoft Windows:
You will need a recent version (1.4.1 or newer) of the Sun Java runtime for Windows. If you don't already have it, download it at java.sun.com.
Download the latest Windows package of Arboreal (arboreal-win.zip) from the Harvard Archimedes site.
Extract the contents of the .zip file. You will need a program such as WinZip.
You should now have a directory (folder) called arboreal.
To start Arboreal, open the arboreal directory, and double-click on the arboreal program (arboreal.exe).
Sorry, there is not yet a nice icon for Arboreal on Windows!
If you encounter any problems, please send me email (see link below).